Trickle-charge system



E. w. BREISCH TRICKLE CHARGE SYSTEM Filed Sept. 2, 1926 2 Sheets-Sheet 1 WITNESSES:

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QINIVENTOR Ed ar Bra/sch.

ATITORNEY Jan. 6,,1931. E. w. BREISCH TR'ICKLE CHARGE SYSTEM 2 Sheets-Sheet 2 Filed Sept. 2, 1926 INVENTOR Edjar WBre/sch.

WITNESSES:

ATi'ORNEY Patented Jan, 6, 193:1.

I I N emce- EDGAR w.- BREISCH, or nnenwoon PARK, rEnNsYLvAnrA, Assiorion To TESTING? I HOUSE vAnrIAJ W ncr aroia ,MAEUIACTURING coMrAitY, 'A CORPORATION or 'rnnnsznes eem-1mmS STEM;

" {application'fi1ed S eptember2,-1926, Seri aI No, 133,281.

My invention relates to batteryscharging systems, and it has particular relation toiAfc batteries :tor radio receiving setscwhichl are charged at a slow rate by'meansoi a trickle,

:harger whenever the Ireceiving s'et isn'ot in use. i v

A disadvantage of the use :otstoragebat-- teries'v for V. exciting the filament :circuits of radio'rec'eiving sets, according to, the prac-z iices of the prior art, has been that the dutyv of startingand stopping; the charging .o'peration at the proper times has been left tothe attentionofthe operatonzwith the result that the storage batteryv has freqeuntly-fl become been left on'too longyresulti-ngpin an inju+ rious overcharge. 1 3 a 1 i c The toregolng difficulties have been; overinvention, with back contacts so arranged that, whenever the receiving s'et'is not in'nse, i

a charging circuit isyenergized for continllously charging the battery ata rate which is preferably low, ascompare'd to the rate of discharge demanded. bywth'e receiving 'set.

the meansjust -mentioned,-f1it is assured that the A, battery shall: be completely charged andireadyfor use atall'times, with, out any possibility ofthe operator forgetting tocharge the battery, and without any fposf ibility of the battery being overchargedat an injurious rate or'of beingleftLWith-the charging circuits connected to the "battery while the filament circuits of the receiving,

set are simultaneously connected to the bat-1v tery, which would result in a very objectionprovided with 'filament-exciting terminals 9 vand an additional terminal-10. A rectifier ablehum in'the receiving instruments;v 1 2,"

A furtherobjectoi' my invention is topro vide a radio power .unit comprising; an A battery and a charger therefor in a longnar row box adapted to be disposed with its nartronta'gespace on the table 1 i tery V the chargingunitn; very muchrun downbiefore being-charged, and, frequently, the, charging current has view, my invention consists in the methods .and 'appar'atus described and claimed in the following specification and illustrated in the and; .j. y

Fig; 4 is a; front elevational apparatus shownin Fig. 8.

A further feature of long narrowv jpower -nnitis,that the battery compartment is disposediat theiront end ot the unit,

whereby the usual indicating device for indicatingthe condition-of charge of the batthe' unit, the fcharging equipment and conmay heviewedfrom the front end of trolling switch being disposed in a'r'ear comswitch, the switchfbeing adapted,in'one p0 sit-ion, to connectthe loadcircuitto the bat- WVith the foregoing 5 and i other objects in accompanying drawing, wherein Figure l isua plan view of atrickle-charge unit made-in accordance with my. invention;

F ig'.2 isa diagrain1natic view of circuits .and' apparatus showing the application of my invention to a conventional radio receiv- 1ng-set; i

Fig. 3 is-a plan view 01" a modified form of 'my invention including the battery indicatpartment, and meansbeing provided at the front end 01"? the unit for actuating said 50 V ing means and shown partially in section, ap-

proximately on the line III -III of Fig. 4,

s to view of the,

Theembodiment of my Invention shown in Fig. 1 comprises a boX 1 having apartition 2 therein forproviding a battery compartment 3 and a rectifiercompartment 4:. A storage battery 5 is disposed in the battery compart-,

ment. The rectifier compartment contains a itransformert having a primary winding 7 energized-by means of the leads 9 of the trans former secondary wlnd ng Ajdouble throwsnap switch 14'is disposed in one wall ofthe rectifier compartment 1 and I is provided withcontact terminalslfi on one an anode 13, is also disposed in the recti-tier compartment ofthe box, the filament 12 being.

7 ing the switchto occupy either one of'itst'woextreme positions, whereby either the pri;

load circuit 17 f the 'batteryunit beingiuti-v lizedas a filament circuit for'energizing a side for completing the primary circuit con nections of the transformer 6 and contact terminals 16 on the other side for connecting the battery to the load circuit terminals 17. lhe double-throw switch 14: is, preferably, a snap switch 'provided with a coil s ring-18, as shown'in Fig.2, or' other means; for causfilament or filaments'21of the vacuum'tube'or tubes embodied in t'he' radio receiving set.

The embodiment of'mymvention whlch 1s shown'in'Fig. 1 doesnot include means for indicatingthe "condition of charge or a dis- -charge of the-storage battery.

The embodi'ment'of my invention shown in Figs. 3 and4'utili'zes a 'conventional battery or wax bal1s'23, which maybe of different colors and difierent specific -gravities,-' dis posed in the electrolyteofone-of the storage battery cells, being suitably restrained by means of'a-cage 24; Thepithba-l ls arevisible and is mounted, in thisinst'ance, on the para tition 28 of j the rear 5 or rectifier c o'mpartindicating means 22, such as is commonly supplied bythe manufacturersof storage' bat-' teries, the same comprising aplurality of pith through the'g'lass wall 25 of the storage-bah tery cell and arr-opening 26 in-the front/end of the box 27 which encloses my 1 power unit.

The power unitbox '27'is provided with a: a partition 28 forming a front compartment 29 for the storage battery and a rear compartment30 fortheoharging devices. 7 The chargngdevice's' are similar to those shown and described 'in'connection' with Figs. 1 and 2' and comprise a snap switch 31 which is similar tothe snap switch 14, previously descri'bed,

ment 30.

tuatingthe'snap switch-551 from the front end of the 130x27. Byway of illustration, l'havei indicated'two'c-hain terminals 84'and 35 ex tending through holes 36 and 37 I in. the front end of the box whereby tl1e switch- 31 may bemjanua'lly operated, a'smay b'e de'sired, in themanner just: described.

"It, will be ob'vious that I have provided a unit wherein the small end-ofthe box or container ispresented to-the front, and the condition of'the battery is visible'atthe front end. At the same time, theswitchingmechcontrol means which may be readily actuated from thefront end of the box. Variousmodifications may be made in the 7 devices and systems embodying my invention without departingfrom the spirit and scope thereof; andQI-nesire, therefore, that only "such'limitations'shall be placed thereon as are imposedlay the prior. art and the appended claims-- I 3 l clalm-as myinventionz. v

1. The combination witha storage battery,

ofa loadcirouit therefor, a charging circuit .adapted to' charge thebattery at a relatively slow rate ascomparedjto the rate of discharge demanded byvsaid load circuit, and a snap of a telephonicsystem comprising a loadcircuit forsai'd battery, a charging circuit for said battery, and a snap switch so arranged as to connect said battery for either charging or discharging but never both charging" and'discharging and never neither charging nor discharging. 3

The combination with a storage battery, of a -'telephoni 'c system adapted for intermittent'service' an'dcomprising a load-circuit for 'said batteryfl' a charging circuit for said battery I andz-a switch whereby-said load circuit 'may be connected or disconnected at will, said "switch includingmeans for causing it to as- .sume' one ofrronly two stable positions, the conn'ections bein'g such that said load circuit is connected}and saidcharging circuit is disconnectedin' one position 'of the switch and said lead *cireuit is disconnected I and said chargin'g circui-tiisconnected-in the other position of the switch, thereby insuring that the ba'tte'ry'shall be continuously. charged whenever said t 'e'lephonic systemis not in service.

4;- The combination'with a storage battery, of a load circuit-therefor. adapted for inter mittent service; atransformer having a pri- 'mary'circuit'and asec'ondary-circuit, a unidi- I rectionally conducting rectifying device inr v lILSflid 'SBCOHdaIy circuit, said second- ADV Slll'tfibl means may be Utilized 01" 3C ar y circuitalso including saidstorage battery 5i The combination with'a storage battery,

of 'aradi'o receiving'setadaptedfor intermittent'service a'nd comprising a load circuit for w; said'batterym transformer having a: primary circuit and a" secondary circuit, a unidirecanism, which must consequently "be iocated 7 back of the battery for lack ofspace'at the-i front end of the-box, isi operablevbyzremote-g.

circuit also including said storagebattery permanently connected thereto, and a-doublethrow snap switch one side of which is connected in said load circuit to open and close thesame and the other side of which is connected in said primary circuit to open and close the same.

6. The combination with a radio receiving set having a hot-cathode circuit, of a storage battery for energizing said hot-cathode circuit, an alternating-current power circuit, a unidirectionally conducting rectifying device, a charging circuit including said unidirectionally conducting rectifying device associated with said power circuit for charging said battery, and a double-throw snap switch, one side of said switch being connected in said hot-cathode circuit of the receiver set to open and close the same, and the other side of said switch being connected in said alternatingcurrent power circuit to open and close the same, whereby said power circuit is closed 7 whenever the hot-cathode circuit of the receiver set is deenergized.

7 A battery andcharger unit comprising a 5 receptacle having a storage battery at its front end and a charging un'it'at its rear end, an indicating means associated with said battery and visable at the front end of said receptacle, load-circuit connections for drawing discharge current from said battery, and a switch in said load-circuit connections for opening and closing said circuit, said switch having back contacts for connecting and disconnecting said charging unit to and from said battery, and said switch being manually operable from the front of said receptacle.

8. A battery and charger unit comprising a box having a battery compartment at its front end and a rectifier compartment at its rear end, a storage battery in said battery compartment, and indicating means associated with said battery and visible at the front end of said box, load-circuit connections for drawing discharge current from said battery, a

transformer in said rectifier compartment, said transformer having a primary circuit and a secondary circuit, a unidirectionally conducting rectifying device in said rectifier compartment, said secondary circuit permanently including said rectifying device and said storage battery, a double-throw snap switch in said rectifier compartment, one side of said switch being connected in said loadcircuit connections for opening and closing the same, the other side of said switch being included in said primary circuit, and means manually operable from the front of said box for actuating said switch.

In testimony whereof, I have hereunto sub- 69 scribed my name this 30th day of August,

EDGAR W. BREISCH. 

